The Dooars or Duars (Pron: ˌdu:ˈɑ:z) (Bengali: ডুয়ার্স; Nepali: डुवर्स) are the floodplains and foothills of the eastern Himalayas in North-East India around Bhutan. Duar means 'door' in Assamese, Bengali, Nepali, Maithili, Bhojpuri, Magahi and Telugu languages, and the region forms the gateway to Bhutan from India.[1] There are 18 passages or gateways through which the Bhutanese people can communicate with the people living in the plains. This region is divided by the Sankosh river into the Eastern and the Western Dooars, consisting of an area of 8,800 km² (3,400 sq mi). The Western Dooars is known as the Bengal Dooars and the Eastern Dooars as the Assam Dooars. Dooars is synonymous with the term Terai used in Nepal and northern India and form the only nitrate rich soil in India.

The Dooars belonged to the Kamata Kingdom under the Koch dynasty; and taking advantage of the weakness of the Koch kingdom in subsequent times, Bhutan took possession of the Dooars. This region was controlled by the kingdom of Bhutan when the British annexed it in 1865 after the Bhutan War under the command of Captain Hedayat Ali. The area was divided into two parts: the eastern part was merged with Goalpara district in Assam and the western part was turned into a new district named Western Dooars. Again in the year 1869, the name was changed to Jalpaiguri District. After the end of the British rule in India in 1947, the Dooars acceded into the dominion of India and it merged with the Union of India shortly afterwards in 1949.

The altitude of Dooars area ranges from 90 to 1,750 m. Innumerable streams and rivers flow through these fertile plains from the mountains of Bhutan. In Assam, the major rivers are the Brahmaputra and Manas. In northern West Bengal, the major river is the Teesta besides many others like the Jaldhaka, Murti, Torsha, Sankosh, Dyna, Karatoya, Raidak, and Kaljani rivers, among others.

The average rainfall of the area is about 3,500 mm. Monsoon generally starts from the middle of May and continues till the end of September. Winters are cold with foggy mornings and nights. Summer is mild and constitutes a very short period of the year.

The Dooars are famous for the tea gardens which were planted by the British. For working in the gardens, they imported labour from Nepal and the Chota Nagpur and Santhal Parganas. The Oraons, Mundas, Kharia, Mahali, Lohara and Chik Baraik are the tribals from these areas. The tribal of Chotanagpur origin are employed in tea gardens, which started production during the 1870s. Before the settlement of other communities, these people converted the forests into villages and busties (agriculture village). The remnants of these tribal people form a majority of the population in Western Dooars.

The Dooars is a large region and is dotted with many towns and cities. The largest city in the whole region stretching from the Darjeeling foothills to the Arunachal Pradesh foothills is Siliguri. This northern Bengal city is well connected with the rest of country by road, air and railway and is the business hub of the region.

Historically, the region has suffered from ethnic strife. The Bodoland agitation in Assam for a separate state for the Bodo people and the Kamtapur or Greater Cooch Behar movement for a Kamtapur state in northern Bengal for the Rajbongshis are the two most vociferous ones.The Adivasi (Tribal) of Dooars are demanding autonomy under the Sixth Schedule of the Indian Constitution. The Gorkhas have also demanded that the area be included in their territory.

Gorumara National Park entrance gate; Tourism is an important source of income for the residents

The economy of Dooars is based on three "T"s – Tea, Tourism and Timber. The main industry of the Dooars region is the tea industry. Thousands of people are engaged in the tea estates and factories. Several people are also engaged in the cultivation of bettlenuts which also contributes to the economy. Cultivation of other crops is done mainly for local consumption.

The area is dotted by several national parks and wildlife sanctuaries which attract a lot of tourists from all over India and abroad, making it an important contributor to the economy and also employer of a number of people.

The timber industry, both legally and illegally, flourishes in this region. A number of saw mills, plywood industries and other allied business also act as an important contributor to the economy.

The Dooars act as doorways to Bhutan; thus, the export-import industry also flourishes in the area. The towns of Jaigaon, Siliguri and Phuentsholing are important hubs of the export-import industry.

A number of rare endangered species of animals like tiger, rhinoceros and elephant make their habitat in the forests of the Dooars. Other animals includes different types of deer, bison, birds and reptiles. A railway line runs through the tea gardens and the various protected areas and a number of elephants have been killed in collisions with trains.[2]

The main mode of transport in the area is roadways. Most of the places are well connected by roads. NH31 is the main highway of the area. Asian Highway AH48 is being constructed through the Dooars region.